Contact the local authorized authorized dealer to purchase. The inquiry of the distributors in each city can be confirmed at the bottom of the official website by "authorized inquiry" or dial 400: 400-770-9990
Tips: Our products are all sold through regular physical marketing channels. No unit or individual is authorized to use the "Internet" to sell Alpha brand products. If you purchase Alpha products through informal channels, the company will not provide any quality assurance, related warranty, and after-sales service.
Select the inverter according to the load characteristics. If the load is a constant torque load, select the inverter. If the load is a fan or pump, select a fan or pump inverter. Because the fan and pump will increase the torque with the speed, The torque is small when starting.
When selecting an inverter, the actual motor current value should be used as the basis for inverter selection. The rated power of the motor can only be used as a reference. In addition, it should be fully considered that the output of the inverter contains rich high-order harmonics, which will deteriorate the power factor and efficiency of the motor. Therefore, compared with the power frequency grid power supply using a frequency converter to power the motor, the motor current will increase by 10% and the temperature rise will increase by about 20%. Therefore, when selecting a motor and an inverter, this situation should be taken into consideration, and a margin should be appropriately reserved to prevent the temperature rise from being too high and affecting the service life of the motor.
When the inverter is to run with long cables, measures should be taken to suppress the influence of the long cable on the coupling capacitance to the ground to avoid insufficient output of the inverter. Therefore, the inverter should be enlarged by one or two gears or an output reactor should be installed at the output of the inverter.
For some special applications, such as high ambient temperature, high switching frequency (especially when using in places with high noise restrictions such as building automation), high altitude will cause derating of the inverter at this time. Need to zoom in one step to select.